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HACTEHA [7]
2 years ago
9

Please help! BRAINLIEST to correct answer!

Mathematics
2 answers:
Volgvan2 years ago
6 0

Answer:

A

Step-by-step explanation:

u can just test them out

tigry1 [53]2 years ago
5 0

Answer:

A. y = 2(x - 2)^{2} + 5

Step-by-step explanation:

positive 2 because the parabola faces upwards, and + 5 because it's vertex is places at (2,5)

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Find the unknown size <br>please I really need answers ​
katen-ka-za [31]

Answer:

z=80°<em><u>(</u></em><em><u>corresponding</u></em><em><u> </u></em><em><u>angles)</u></em>

<em><u>x+z=180°(linear \: pair \: ) \\ 80°  + x = 180°  \\ x= 100°</u></em>

<em><u>y=</u></em><em><u>100 </u></em><em><u>° </u></em><em><u>(</u></em><em><u>alternate</u></em><em><u> </u></em><em><u>angles</u></em><em><u>)</u></em>

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8 0
2 years ago
What is the value of 3x^2 + 5x + 25, when x = 3<br> (3x^2 means 3x squared)
pentagon [3]
I got 67 but I can guarantee it’s right
8 0
3 years ago
Simplify -(n + 2) + 3(n – 2)
hjlf

Answer:

2n-4

Step-by-step explanation:

-n-2+3n-2 (here I distributed the negative to both parts)

2n-4 (gather the like terms)

4 0
3 years ago
1-2m-5m=15 multistep homework
Montano1993 [528]

1-2m-5m=15

combine like terms

1 -7m = 15

subtract 1 from each side

1-1-7m = 15-1

simplify

-7m = 14

divide by -7

-7m/-7 = 14/-7

simplify

m = -2


6 0
3 years ago
The amount, A, in milligrams, of radioactive material remaining in a container can be modeled by the exponential function A(t) =
lisov135 [29]

Answer: 4 years


Step-by-step explanation:

A(0) has to be amount at start. Assume that's 5mg

Then A(t) = 5×(0.5)^(0.25t) = 5×2^(-t/4),

(also known as 5 exp(-λ t) with λ = ln(2)/4, incidentally).


We need to such that A(t) = 2.5mg, or 2^(-t/4) is 1/2, which happens when -t/4 is -1, or t is 4.



4 0
3 years ago
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